home: add callout for User Survey 2025

Author: seanmonstar

_layouts/home.html

@@ -7,6 +7,9 @@
     {% include header.html %}
     <section class="hyper-pageheader">
       <div class="container">
+        <span class="alert alert-light">
+            Fill out the <a href="https://www.surveyhero.com/c/vvnhc7j7">hyper User Survey 2025</a>!
+        </span>
         <h1>hyper</h1>
         <p>A protective and efficient HTTP library for all.</p>
         <p><a href="/guides/1" class="btn hyper-getstarted">Get Started</a></p>